Clinical trial · Exercise · 30 Oct 2026
Aerobic exercise lowered muscle Miro1 as insulin response improved in type 2 diabetes
Source: SciTechDaily
What the research found
SciTechDaily reported this on 30 October 2026. Heintz, Kirwan, and colleagues, at Pennington Biomedical, published in Nature Communications on 19 October 2026 (DOI 10.1038/s41467-026-77278-6). Kirwan is now at the University of Oklahoma Harold Hamm Diabetes Center. Miro1 is Mitochondrial Rho GTPase 1. In preclinical models, extra Miro1 impaired the insulin response in muscle, and removing it restored that response. A separate human randomized trial in people with obesity and type 2 diabetes compared aerobic exercise with usual care. The exercise group had lower Miro1 in muscle, and better insulin sensitivity and mitochondrial energy production. The release says the human data do not prove that the Miro1 drop caused the benefit from exercise. Sample size, age, and sex were not stated in the release used here, so they are not given. This is not a product a person can take. Not medical advice.
Evidence level: Clinical trial. This is among the stronger kinds of evidence, but one study rarely settles a question.
More exercise news
- In 13,423 adults ages 65 and older, higher balance, strength, and march scores lined up with a lower chance of dying over seven years
- In 1,917 Mexican adults ages 50 and older, a weaker handgrip lined up with a higher chance of dying, and the link was stronger in men
- In a rodent model, tongue exercise raised output from surviving motor neurons
- Both orders of complex training improved fitness measures in 25 male university athletes
- Resistance exercise plus essential amino acid intake beat either one alone for muscle fitness in women over 65